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Path prediction device and path prediction method

a path prediction and path technology, applied in traffic control systems, navigation instruments, instruments, etc., can solve the problems of reducing the device is not allowed to use its own traveling history, and the inability to predict the path in an area, so as to improve the accuracy of the path prediction

Active Publication Date: 2017-07-13
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent aims to improve accuracy in predicting a path using a device that can make use of the traveling histories of other drivers. However, even when there is a sufficient amount of information available, the device is not allowed to use it. The present invention seeks to address this problem and increase the use of the first path information as a score assigned to the local area corresponding to the first region. The technical effect is better accuracy in predicting a path.

Problems solved by technology

However, when the device predicts a path based on its own traveling histories, it is not allowed to predict the path in an area in which the vehicle has not traveled in the past.
However, even when sufficient amounts of its own traveling histories are available as in an area adjacent to a home or the like, the device is not allowed to use the own traveling histories.
Therefore, accuracy in the prediction of a path reduces.

Method used

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  • Path prediction device and path prediction method

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Experimental program
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first embodiment

(System Configuration)

[0046]Hereinafter, a description will be given of the preferred embodiments of the present invention with reference to the drawings.

[0047]A path prediction system according to a first embodiment is a system that stores information on paths where a plurality of vehicles has traveled in the past and predicts, when receiving a request from a vehicle (hereinafter called a prediction target vehicle), a path where the vehicle will travel in the future based on the current position of the vehicle.

[0048]FIG. 1 is a system configuration diagram of the path prediction system according to the embodiment.

[0049]The path prediction system according to the embodiment is constituted by a path prediction device 10 and an in-vehicle terminal 20.

[0050]In addition, the path prediction system according to the embodiment performs (1) a first phase in which the path prediction device 10 periodically collects current positions from a plurality of in-vehicle terminals 20 and generates ...

second embodiment

[0102]In the first embodiment, the path prediction device 10 determines whether to predict a path using only the traveling histories of an own vehicle or predict the path using the traveling histories of other vehicles as well, based on whether the prediction target vehicle exists in a living area. Conversely, in a second embodiment, it is possible to change the use ratio of each history.

[0103]The second embodiment differs from the first embodiment in that (1) the processing of step S13 is not performed in advance, (2) traveling path information is generated as occasion demands after a request is received from a prediction target vehicle, and (3) two types of traveling path information, i.e., traveling path information generated using only information corresponding to an own vehicle and traveling path information generated using only information corresponding to other vehicles are generated when the traveling path information is generated.

[0104]In the second embodiment, instead of a...

modified example

[0107]Each of the above embodiments is just an example, and the present invention may be appropriately modified and carried out without departing from its scope.

[0108]For example, in the description of the above embodiments, information indicating the movements of vehicles from links to links is defined as the traveling path information. However, information on the movements of vehicles from links to nodes or from nodes to links may be used.

[0109]In addition, landmarks other than links or nodes may be defined to use information indicating the movements of vehicles between the landmarks and the links (or the nodes). For example, when a vehicle exists in a link, a probability at which the vehicle moves to a landmark (a shop, a public facility, a home or the like) near the link may be calculated and used in combination with the illustrated method to predict a path. For example, when a probability at which a vehicle moves to a commercial facility located midway through a link L1 is grea...

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PUM

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Abstract

A path prediction device comprises a storage unit that generates and stores, based on information collected from a plurality of vehicles including a first vehicle, traveling path information indicating information associated with paths where the respective vehicles have traveled; a positional information acquisition unit that acquires a first position indicating the current position of the first vehicle; and a path prediction unit that predicts the traveling path of the first vehicle using at least one of first path information indicating paths of the first vehicle and second path information indicating paths of second vehicles among the traveling path information, wherein the path prediction unit determines a use ratio of the first path information, which is used to predict the traveling path, based on a past traveling record of the first vehicle at the first position.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Japanese Patent Application No. 2016-004753, filed on Jan. 13, 2016, which is hereby incorporated by reference herein in its entirety.BACKGROUND OF THE INVENTION[0002]Field of the Invention[0003]The present invention relates to a device that predicts the traveling path of a vehicle.[0004]Description of the Related Art[0005]Technologies for predicting the traveling paths of vehicles using various information have been known. By the prediction of the traveling paths of vehicles in advance, it becomes possible to collect various information on the traveling paths and present the information to drivers.[0006]As such, for example, Japanese Patent Application Laid-open No. 2010-267000 discloses a technology for determining the probability of the passage of each road based on the current position of a vehicle and positional information transmitted from the vehicle in the past and predicting the traveling pat...

Claims

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Application Information

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IPC IPC(8): G08G1/00G01C21/20G01C21/36
CPCG08G1/20G01S19/14G01C21/20G01C21/36G01C21/3407G01C21/3446G08G1/0112G08G1/0129G08G1/0141G08G1/096822G08G1/096844G08G1/096861G01C21/3617G01S19/42G01S5/0027
Inventor YANAGIHARA, TADASHIHORIGUCHI, KENJIKURIHARA, KEISUKESANNOMIYA, CHIHIROINOUE, ATSUSHI
Owner TOYOTA JIDOSHA KK